Here is what reviewers have to say about Electric Machines, Second Edition.
- The topic organization is certainly unique. I like the concept of developing AC machines first, particularly starting with motors before generators. The practical application concepts and problems are particularly interesting.
- We do need a machinery book with some NEMA standards and tables as found in Hubert's book. Because DC generators are internally AC generators, covering AC before DC is acceptable given a circuits course and knowledge of complex numbers as a prerequisite for this course.
- The author's years of experience with machines has resulted in a clean, concise delivery of the text material enhanced by accompanying schematics, pictures, and sample problems.
- I consider this text to be the best I have seen on the subject of electric machines. The writing style is very good, and the author has both practical and theoretical knowledge. I think this makes the text more believable to the students.
- A good blend between the simple approach to machines found in some texts and the highly technical approach found in others. Among all the new texts I have seen over the past few years, this is the best.
- I feel that the general order of topic coverage (transformers, AC machines, and DC machines) while different from the more usual order (DC, AC, transformers) is reasonable and in fact is the order that we have used in our courses for many years. Mr. Hubert's wealth of experience shows through and I am impressed with what I have read.
- For the general market, the most attractive feature is the stand-alone character of the major sections of the book. The material is well written and the coverage is thorough. Review questions have been well chosen, and homework problems cover the material well. Example problems are appropriate, applicable, and well conceived.
- When one is forced to teach such a course in one semester, one has to make choices on what to teach and on what to skip. In this respect, the author's decision to introduce AC machinery first and leave DC machinery as a standalone module provides some flexibility to the instructor on how to handle the material.
Table of contents
1. Magnetics, Electromagnetic Forces, Generated Voltage, and Energy Conversion.
2. Transformer Principles.
3. Transformer Connections, Operation, & Specialty Transformers.
4. Principles of Three-Phase Induction Motors.
5. Classification, Performance, Applications, and Operation of Three-Phase Induction Machines.
6. Single-Phase Induction Motors.
7. Specialty Machines.
8. Synchronous Motors.
9. Synchronous Generators (Alternators).
10. Principles of Direct Current Machines.
11. Direct-Current Motor Characteristics and Applications.
12. Direct-Current Generator Characteristics and Operation.
13. Control of Electric Motors.
A: Balanced Three-Phase System.
B: Three-Phase Stator Windings.
C: Constant-Horsepower, Constant-Torque, and Variable Torque Induction Motors.
D: Selected Graphic Symbols Used in Controller Diagrams.
E: Full-Load Current in Amperes, Direct-Current Motors.
F: Full-Load Current in Amperes, Single-Phase Alternating-Current Motors.
G: Full-Load Current, Two-Phase Alternating-Current Motors (Four Wire).
H: Full-Load Current, Three-Phase Alternating-Current Motors.
I: Representative Transformer Impedances for Single-Phase 60 Hz Transformers.
J: Unit Conversion Factors.
Answers to Odd-Numbered Problems.
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